Endocrine control

Cells from tissues associated with primary and secondary sexual characteristics are under particular endocrine control. Sex hormones determinethe growth, differentiation, and proliferation of such cells. When a tumor develops in such tissues, it is sometimes hormone dependent and the use of anti hormones removes the impetus for the tumor s headlong growth. Many nonsteroidal compounds have estrogenic activity diethylstilbest-jrol (81) may be taken as an example. Certain more bulky an-... 

Although it is the dominant organ of the neural system, the brain also has an endocrine function, enabling the all-important overlap between neural and endocrine control systems. The most obvious and classically recognized hormonal function of the brain arises from the peptide hormones of the hypothalamus. The hypothalamus is intimately connected with the pituitary, producing the hypothalamic-pituitary axis. The hypothalamus is part of the brain the pituitary, although located within the skull, is not part of the brain but is part of the endocrine system. Peptide hormones from the hypothalamus influence pituitary function and thus endocrine function throughout the body. 

Although a-D-mannosidase appears to be under endocrine control,28,28 its natural function remains obscure. It is probable that the enzyme is important in the catabolism of D-mannose-containing glycoproteins,12,16,88 and, therefore, that the important trace element zinc could be indirectly implicated in this process. It is well known that zinc deficiency has an adverse effect on fertility in the male,89,90 and it could be argued that the changes observed in a-D-mannosidase activity in uterus and epididymis indicate that this enzyme is important in reproduction. It is scarcely justifiable to ascribe a cause-and-effect relationship to the correlations observed between the zinc content and the a-D-mannosidase activity in epididymis. All that can be said with any certainty is that, under certain circumstances, the two variables respond together to a common stimulus. 

Hormonal patterns and their regulation are more complex in females than in males due to the female cycle, the fertilization process, gestation and lactation. All functions ofthe female reproductive system are under endocrine control and therefore can be disrupted by effects on the reproductive endocrine system. 

Insect mating behavior endocrine control of a chemical communication... 

Biosynthesis and endocrine control of the production of the German cockroach sex pheromone, 3,1 l-dimethylnonacosan-2-one. Proceedings of the National Academy of Sciences, USA 89 6050-6054. 

McLachlan RI. The endocrine control of spermatogenesis. Baillieres Best Bract Res Clin Endocrinol Metab. 2000 14 345-362. 

Gagliardino JJ. Physiological endocrine control of energy homeostasis and postprandial blood glucose levels. Eur Rev Med Pharmacol Sci. 2005 9 75-92. 

Johnson, D.W. (1973). Endocrine control of hydromineral balance in teleosts. American Zoologist 13,799-818. 

Barth R. H., Jr (1962) The endocrine control of mating behavior in the cockroach Byrsotria fumigata (Guerin). Gen. Comp. Endocrinol. 2, 53-69. 

Barth R. H. (1965) Insect mating behavior endocrine control of a chemical communication system. Science 149, 882-883. 

Adams T. S., Holt G. G. and Blomquist G. J. (1984a) Endocrine control of pheromone biosynthesis and mating behavior in the housefly, Musca domestica. In Advances in Invertebrate Reproduction 3, ed. W. Engels, pp. 441 -56. Elsevier, Amsterdam. 

Schal C., Ling D. and Blomquist G. J. (1997). Neural and endocrine control of pheromone production and release in cockroaches. In Insect Pheromone Research New Directions, eds R. T. Carde and A. K. Minks, pp. 3-20. Chapman and Hall, New York. 

The sexual dimorphism of cuticular hydrocarbons is completed during the first three days after imaginal eclosion. During the same period, important physiological events take place, female oocyte maturation and vitellogenesis. A number of mutations have been described which affect ovarian development or endocrine control. These mutants were used to elucidate a possible hormone control mechanism used to regulate hydrocarbon biosynthesis. 

Noall, M.W., Riggs, T.R., Walker, L.M., Christensen, H.N. (1957). Endocrine control of amino acid transfer. Science 126,1002-1005. 

Veldhuis JD, Roemmich JN, Richmond EJ, Rogol AD, Lovejoy JC, Sheffield-Moore M, Mauras N, Bowers CY (2005) Endocrine control of body composition in infancy,... 

Luetjens CM, Weinbauer GF, Wistuba J. Primate spermatogenesis new insights into comparative testicular organisation, spermatogenic efficiency and endocrine control. Biol Rev Comb Phil Soc 2005 80(3) 475-88. 

Legan SJ, Karsch FJ, Foster DL (1977) The endocrine control of seasonal reproductive function in the ewe a marked change in response to the negative feedback action of estradiol on luteinizing hormone secretion. Endocrinology 707 818-824. 

Parietal cells possess receptors for three stimulators of acid secretion neural (acetylcholine, muscarinic-type receptor), paracrine (gastrin) and endocrine control (histamine, H2 type receptor) (Figure 4.2). 

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